func OverrideWithPaths()

in utils/json.go [218:257]

• 38 lines of code
• 14 McCabe index (conditional complexity)

func OverrideWithPaths(old interface{}, new interface{}, path string, pathSet map[string]bool) (interface{}, error) {
	if len(pathSet) == 0 || old == nil {
		return old, nil
	}
	if _, ok := pathSet[path]; ok {
		return new, nil
	}
	switch oldValue := old.(type) {
	case map[string]interface{}:
		if newMap, ok := new.(map[string]interface{}); ok {
			outMap := make(map[string]interface{})
			for key, value := range oldValue {
				if newValue, ok := newMap[key]; ok {
					nestedPath := strings.TrimPrefix(path+"."+key, ".")
					out, err := OverrideWithPaths(value, newValue, nestedPath, pathSet)
					if err != nil {
						return nil, err
					}
					outMap[key] = out
				} else {
					outMap[key] = value
				}
			}
			return outMap, nil
		}
	case []interface{}:
		// Does not support override specific item in list
		for v := range pathSet {
			if strings.HasPrefix(v, path+".") {
				return nil, fmt.Errorf("ignoring specific item in list is not supported")
			}
		}
		if newArr, ok := new.([]interface{}); ok && pathSet[path] {
			return mergeArray(oldValue, newArr), nil
		}
	default:
	}

	return old, nil
}